Johann Conrad Brunner (16 January 1653 – 2 October 1727) was a Swiss anatomist, especially cited for his work on the pancreas and duodenum.

[1] Brunner was born in Diessenhofen,[2] and studied medicine in Schaffhausen, Strasbourg, Amsterdam, London and Paris.

[2] In 1716, Brunner was appointed personal physician to Charles III Philip the new Elector of the Palatinate.

In 1683 he removed the pancreas from a dog and noticed that the animal experienced extreme thirst and polyuria.

He published his findings on pancreatic research in a treatise titled Experimenta Nova circa Pancreas.